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819 Striker Avenue Suite 8 <br /> Sequoia a Sacramento, CA 95834 <br /> 4D— (916)9Z 1-9600 <br /> Analytical www <br /> (916)921-0100 <br /> OWsequosalabs corn <br /> Stratus Environmental Project ARCO 2168, Stockton, CA Sampled 8/30/00 <br /> 3330 Cameron Park Drive,Ste 550 Project Number N/A Received 911/00 <br /> Cameron Park, CA 95682 Project Manager Jay Johnson Reported 9/21,27/00 <br /> �' err u^-�,"- ^' .€'"t.'�r 'M's 14 a' rf "'^7,`a'- wop&=.-sir v. °cam .a+✓- - _ _ .. � ,�`�'E�-�rs-o aR ,h'"=.k. <br /> ����;����� '�p �;r,�- �� �-��� Y� �'� ''� Sequo►aA�nalytical�Sacrarnento'`= -.� � � �' '° , ,� '�- - w�: ��;��s <br /> Date Spike Sample QC Reporting Limit Recov RPD RPD <br /> Analyte Analyzed Level Result Result Units Recov Limits % Limit % Notes* <br /> Batch 0090117 Date Prepared 9113100 Extraction Method EPA 50305 [P/'Fl <br /> Blank 0090117-SLK/ <br /> Benzene 9/13/00 ND ug/l <br /> 200 <br /> Toluene " ND 200 <br /> Ethylbenzene ND 200 <br /> Xylenes(total) ND 200 <br /> Surrogate 1,2-DCA-d4 500 530 600-140 106 <br /> Surrogate Toluene-d8 500 570 600-140 114 <br /> Surrogate 4-BFB 500 544 600-140 109 <br /> LCS 0090117-BSI <br /> Benzene 9113/00 500 540 ug/l 700-130 108 <br /> Toluene 11500 562 700-130 112 <br /> rogate 1,2-DCA-d4 500 522 60 0-140 104 <br /> ogate Toluene-d8 500 562 " 600-140 112 <br /> rrogate 4-BFB 500 528 600-140 106 <br /> Matrix Spike 0090117-MSI S009081-01 <br /> Benzene 9/13100 500 ND 55 2 ugh 700-130 110 <br /> Toluene 500 ND 590 700-130 118 <br /> Surrogate 12-DCA-d4 500 528 600-140 106 <br /> Surrogate Toluene-d8 " 500 582 600-140 116 <br /> Surrogate 4-BFB 500 520 600-140 104 <br /> Matrix Spike Dup 0090117-MSD1 5009081-01 <br /> Benzene 9/13/00 500 ND 576 ug/I 700-130 115 250 444 <br /> Toluene Soo ND 602 700-130 120 250 168 <br /> Surrogate 1,2-DCA-d4 500 544 600-140 109 <br /> Surrogate Toluene-d8 500 588 600-140 118 <br /> Surrogate 4-BFB 500 540 600-140 108 <br /> Batch 0090163 Date Prepared 9115/00 Eatraebon Method EP4,5030E IP/Tl <br /> Blank 0090163-BLKI <br /> Benzene 9/15/00 IT`D ug/l 200 <br /> Toluene ND 200 <br /> Ethylbenzene ND 200 <br /> Xylenes(total) ND 200 <br /> Surrogate 1,2-DCA-d4 500 _ 518 600-140 104 <br /> Surrogate Toluene-d8 " Soo 574 600-140 115 <br /> Surrogate 4-BFB 500 524 600-140 105 <br /> 0 <br /> Sequoia Analytical-Sacramento *Refer to end of report for text of notes and definitions <br /> Page 16 of 22 <br />